Sun Damage: The 5 W’s of UV Exposure

Although it’s pleasant as you first experience sun warming your skin after the winter, over time, the sun causes damage to your body – including your immune system and particularly, your skin. Sun damage can make itself visible in a number of ways, from premature aging and discoloration of the skin (sometimes called “sun spots”) to, in more severe cases, skin cancer and melanoma. Sun damage is caused by Ultraviolet radiation:

What is Ultraviolet Radiation?

Ultraviolet (UV) radiation is invisible rays that are part of the energy that comes from the sun. There are three types of UV radiation – UVA, UVB, and UVC.

UV rays are measured by a numbered index. Local news and weather channels will tell you what the level is expected to reach each day:

Why Is It Important to be Protected?

When Is the Most Dangerous Time for UV Exposure or Sun Damage?

Most of the day’s UV rays from the sun come between 9 a.m. and 5 p.m., and almost a third of the day’s rays come between 11 a.m. and 1 p.m., according to the American Cancer Society. UV rays are dangerous throughout the year, but they are the strongest during the summer.

Where Does UV Radiation Come From and Where Should I Be Protected?

UV radiation comes mostly from the sun and tanning beds. You may also be exposed to UV radiation via special lamps or lasers that are used to treat skin conditions such as psoriasis. Any part of your skin that is exposed to the sun should be protected by:

Who Is most Affected by UV Exposure?

Everyone should be protected from UV exposure. Sunscreen should especially be applied to children and parents should also consider protective clothing for little ones spending time in the sun. Babies younger than six months should be protected using hats and clothing and should be kept out of direct sunlight. Only use sunscreen on small areas that are exposed if shade or clothing is not available.